We have a boy working at the shop half a day and going to school half a day. We had him awnser the phone some and he had a problem talking to people then one day we had him go to town and air a tire up. He calls back to the shop and trys to tell me the core is stuck in the cap. What?? we went around and around. One of the other guys said he would go and find out what was wrong. What happen was the end of the stem had broke off even with the cap.I couldnt figure out what was the deal with him and the phone tell a women told me she had a kid on the same work program that couldnt speak on a phone.She made up abunch of stuff were he had to make alot of calls and it realy helped him out.